Hydrangea arborescens RUBY is a strong rebloomer, the foliage is extra dark and the stems are strong, making this new hydrangea a gem in any garden. It is a triploid cytotype.
Inflorescence: Mophead, 130mm across. Red flower buds open to two-toned combination of bright ruby-red and silvery pink.
Bred by Thomas Green Ranney of North Carolina State University (USPP granted 2017-08-22). European patent granted 2016-12-22.
Synonym: H. a. ‘RUBY’ INVINCIBELLE SERIES.
Zones: 3 to 8
Size: Medium (to 1.25m).
Color in neutral soil:
Burgundy + pink.
Color in acidic soil with AI present:
Burgundy + pink (no change)
Ray florets: 4 sepals, entire, slightly overlapping, 22mm diam.
Leaves: Simple, opposite and deciduous. Broadly ovate. Margin: dentate to serrate. Apex: acuminate. Base: acute to rounded. Venation pattern: pinnate, opposite to subopposite. Adaxial surface: glabrous . Abaxial surface: slightly pubescent. 85mm l x 60mm w.